Does Gmail make money?

Related questions

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3. Is there a way to contact Gmail?
4. Is Google and Gmail the same?
5. Do I have a Gmail account?
6. Can I use Gmail with my own domain for free?
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8. How can I tell how many emails I have in Gmail?
9. How long do emails stay in Gmail?
10. Where does Google make the most money?

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17. #revenue
18. #gmail
19. #advertisements
20. #mails